منابع مشابه
Urea clearance tests.
This paper has its origin in work done in a prisoner of war hospital camp in Siam. Under the prevailing condition of protein-starvation there the Van Slyke formulae for calculating urea clearance as a percentage of normal were found to be completely misleading. The only literature then available was a handbook of laboratory methods giving the bare routine of the test without indicating the sour...
متن کاملA Comparison of the Creatinine and Urea Clearance Tests of Kidney Function.
The urea clearance test developed by M6ller, McIntosh and Van Slyke (1) has one disadvantage, namely, that maximum and standard clearances are only comparable by refer.ence to the average normal value for each or by multiplying the standard clearance by a constant. In addition the standard clearance, involving the square root of the urine volume, is difficult to interpret. The creatinine cleara...
متن کاملBlood urea clearance in young Indonesian subjects.
Urea clearance was determined on 25 healthy male medical students at Surabaja, Indonesia. The age of the subjects varied from 20 to 25 years, the average being 23 years. The subjects reported to the laboratory at 8 a.m., when they voided urine and then rapidly drank 500 m!. of iced water. At 9 a.m. they passed urine which was collected and measured, and 5 m!. of blood was withdrawn by vcnepuncl...
متن کاملNomograms for calculation of urea clearance.
Two nomograms are given for use in calculating standard, C3, or maximum, Cm, urea clearance. The first nomogram calculates the urine flow rate, f, from the urine collection time and volume data. With the second nomogram, values of f and urea nitrogen concentrations in blood serum (or plasma) and urine are used to calculate either C3 or Cm, according to the value of f. There is no intermediate c...
متن کاملThe artificial kidney and urea clearance.
A theoretical efficiency has been calculated from the known urea clearance of the artificial kidney, the assumed total body water of the patient, and the initial plasma urea. The efficiency of dialysis never significantly exceeded the calculated figure. In some patients with trauma or glomerulonephritis the efficiency was very poor whereas in patients with renal failure complicating pregnancy t...
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ژورنال
عنوان ژورنال: Journal of Clinical Pathology
سال: 1949
ISSN: 0021-9746
DOI: 10.1136/jcp.2.4.266